Utuk-Khaya Mountains, unit 5 (Cambrian of Russian Federation)

Also known as Reef 3791

Where: Tuva, Russian Federation (51.7° N, 92.2° E: paleocoordinates 6.1° S, 7.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Akdurug Formation, Botomian (516.0 - 512.9 Ma)

• 20-80 m thick, Sanashtykgol stage

• group of beds-level stratigraphic resolution

Environment/lithology: perireef or subreef; lithified sandstone and lithified limestone

• sandstones, argillite, conglomerates with small bioherms

Size class: macrofossils

Primary reference: D. V. Osadchaya, L. N. Kashina, I. T. Zhuravleva and N. P. Borodina. 1979. Stratigrafiya i arkheotsiaty nizhnego kembriya Altaye-Sayanskoy skladchatoy oblasti [Lower Cambrian stratigraphy and archaeocyatha of the Altay-Sayan fold belt]. Trudy Instituta Geologii i Geofiziki, Sibirskoye Otdeleniye 380:1-215 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81479: authorized by Wolfgang Kiessling, entered by Uta Merkel on 26.06.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
  - Atopidae
"Ivshiniellus nikolaii" = Atops
"Ivshiniellus nikolaii" = Atops trilobite
 Redlichiida - Redlichinidae
Redlichina sp. Lermotova 1940 trilobite
 Ptychopariida - Solenopleuridae
Usumunaspis sp. Lazerenko 1962 trilobite
Artiopoda
 Agnostida - Hebediscidae
"Hebediscus sp." = Dipharus
"Hebediscus sp." = Dipharus Clark 1923
 Agnostida - Calodiscidae
Calodiscus sp. Howell 1935